/* 初始化 */
*{
    margin: 0;
    padding: 0;
  }
  /* header部分的样式 */
  .header{
    background-color: black;
    color: white;
    height: 80px;
  }
  .content{
    width: 90%;
    margin: 0 auto;
    overflow: hidden;/* 清除浮动 */  
  }
  .header-left{
    width: 30%;
    float: left;
  }
  .header-left img{
    height: 50px;
    margin-top: 15px;
    float: left;
  }
  .header-left span{
   line-height: 80px;
    display:block;
    float: left;
    color:#bcaa91;
  }
  .header-mid{
    width: 40%;
    float: left;
  }
  .header-mid ul{
    list-style: none;
    overflow: hidden;/* 清除浮动(子元素li的浮动)*/  
  }
  .header-mid ul li{
    float: left;
    width: 25%;
   /* height: 80px;*/
    text-align: center;
  }
  /* class为active的li元素 */
  .header-mid ul li.active a{
    color: red;
  }
  .header-mid a{
    color: white;
    text-decoration: none;
    line-height: 80px;
  }
  .header-right{
    width: 30%;
    float: left;
  }
  .header-right img{
    height: 40px;
    margin-top: 20px;
    float: right;
  }
  .header-right span{
    line-height: 80px;
    display: block;
    float: right;
    margin:0 20px;
  }
  .header-right button{
    width: 100px;
    height: 40px;
    margin-top: 20px;
    border-radius: 10px;/*边框为圆形，半径*/
    background-color: transparent;
    color: white;
    cursor: pointer;/*改变鼠标的光标形状*/
    float: right;
  }
  .header-right button:hover{
    background-color: #c85353;
    color: black;  
  }

  /* bannner部分的样式 */
.banner{
  background-color: #5f5b5b;
  color: white;
}
.banner-left{
  width: 40%;
  float: left;
}
.banner-left h1{
  margin: 100px 0 30px;
  font-weight: 300;/*字体的粗细，100-900*/
}
.banner-left p{
  color:#c3c0c0;
  font-size: 14px;
  line-height: 30px;
}
.banner-left span{
  margin-top: 30px;
  display: block;
  width: 200px;
  height: 50px;
  line-height: 50px;
  background-color: #f73f3f;
  text-align: center;
  font-size: 20px;
  border-radius: 25px;
  cursor: pointer;/*改变鼠标的光标形状*/
}
.banner-left span:hover{
  background-color: transparent;
  color: #f73f3f;
  border: solid 1px #f73f3f;
}
.banner-right{
  width: 40%;
  float: right;
  text-align: right;  
}
.banner-right img{
  width: 80%;
  max-width: 450px;
}

/* icon格式*/
.icon{
  background-color: black;
  color: white;
  padding: 50px 0;
}
.icon ul{
  list-style: none;
  overflow: hidden;
}
.icon li{
  width: 25%;
  float: left;
}
.icon-box{
  text-align: center;
}
.icon-box h3{
  color: #f73f3f;
  margin: 20px 0;
}
.icon-box p{
  font-size: 14px 0;
  color: #c3c0c0;
}

/*advantage部分样式*/
.advantage{
  background-color: #e2e2e8;
  padding: 50px 0;
}
.adv-header{
  text-align: center;
  margin-bottom: 50px;
}
.adv-header h1{
  font-weight: 400;
}
.adv-header h1 span{
  color:red;
}
.adv-header p{
  font-size: 14px;
  color: #4b453d;
}
.adv-body{
  display: flex;/*弹性布局,css3*/
  margin: 0 -30px;/*两端对齐*/
}
.adv-box{
 border: 1px solid red;
 margin: 0 30px;
 padding: 30px;
 text-align: center;
border-radius: 20px;
}
.adv-box img{
  min-height: 120px;
}
.adv-box h3{
  color: red;
}
.adv-box p{
  font-size: 14px;
  color: #4b453d;
}
/* feature部分的样式 */
.feature{
  padding: 50px 0;
}
.feature-header{
 text-align: center;
 margin-bottom: 30px;
}
.feature-header span{
  width: 100px;
  height: 40px;
  line-height: 40px;
  border-radius: 20px;
  display: inline-block;
  background-color: #d06d6d;
  font-size: 14px;
  color: white;
  margin: 0 20px;
}
.header-left span.active{
  background-color: #8c8787;
}
.feature-left{
  width: 50%;
  float: left;
}
.feature-left h1{
 font-weight: 300;
 margin-bottom: 30px;
}
.feature-left h1 span{
  color: #d06d6d;
}
.feature-left span.color-red{
  color: #d06d6d;
}
.feature-left p{
  margin-bottom: 30px;
  font-size: 14px;
  color: #8c8787;
}
.feature-border{
  font-weight: 900;
  color: #5f5b5b;
}
.feature-left>span{
  background-color: #d06d6d;
  display: inline-block;
  width: 200px;
  height: 50px;
  line-height: 50px;
  text-align: center;
  border-radius: 25px;  
  color: white;
  font-size: 20px;
  text-align: center;
  cursor: pointer;
}
.feature-right{
  width: 40%;
  float: right;
  text-align: right;
}

/* help部分的样式 */
.help{
  background-color: #dad6d6;
  padding-bottom: 40px;
}
.help content{
  margin: 50px 0;
}
.help-header h1{
  text-align: center;
  color: #d06d6d;
  padding: 100px 0 50px 0;
  border-bottom: 2px solid #8c8787;
}
.help-left{
  width: 40%;
  float: left;
  overflow: hidden;
}
.help-left img{
  border-radius: 100px;
  margin-top: 50px;
  float: left;
}
.help-right{
  width: 50%;
  float: left;
}
.help-right-up{
  text-indent: 2em;
  color: #736e6e;
  margin-top: 50px;
  font-size: 14px;
}
.help-right-down{
 margin-top: 50px;
}
.help-right-down h3{
  color: #d06d6d;
}
.help-right-down p{
  color: #d06d6d;
  font-size: 14px
}
.help-right-down p span{
  color: black;
  float: right;
  font-size: 20px;
  font-style: italic;
}
/* contact部分的样式 */
.contact{
  padding: 30px 0;
}
.contact-left{
  width: 50%;
  float: left;
}
.contact-left h1{
  font-size: 30px;
  font-weight: 400;
  color: #bf2f2f;
  margin-bottom: 20px;
}
.contact-left input{
  width: 220px;
  height: 30px;
}
#email{
  width: 450px;
  margin: 30px 0;
}
.contact-left textarea{
  width: 450px;
}
/* 属性选择器 */
.contact-left input[type=submit]{
  background-color: #bf2f2f;
  margin-top: 30px;
  font-size: 20px;
  color: white;
  border: 1px solid #bf2f2f; 
}
.contact-right{
  width: 50%;
  float: right;
  text-align: right;
}
.contact-right img{
  max-width: 400px;
}


/* .apply部分样式 */
.apply{
  background-color: black;
}
.apply-left{
  width: 50%;
  float: left;
}
.apply-left p{
  font-size: 14px;
  font-family: monospace;
  font-style: italic;
  height: 60px;
  line-height: 60px;
  color: white;
  margin: 30px 0;
}
.apply-right{
  width: 50%;
  float: right;
  text-align: right;
  margin: 30px 0;
}
.apply-right span{
  color: white;
  background-color: #d7551a;
  font-size: 14px;
  display: inline-table;
  width: 200px;
  height: 60px;
  border-radius: 30px;
  text-align: center;
  line-height: 60px;
  cursor: pointer;
}
/* footer部分样式 */
.footer{
  background-color: #333435;
  padding-top: 40px;
}
.footer-wraper{
  column-count: 4;
  column-gap: 25px;
}
.footer-box{
  min-height: 186px;
}
.footer-box h3{
  color: #a6a3b0;
  font-size: 20px;
  font-family: monospace;
  margin-bottom: 24px;
}
.footer-box p{
  font-size: 14px;
  color: #c3c0c0;
}
.footer-box p.active{
  color: #008000;
}
.footer-box ul{
  list-style: none;
}
.footer-box li{
  overflow: hidden;
  padding: 5px 0;
}
.footer-box img{
  max-width: 25px;
  float: left;
}
.footer-box span{
  color: #c3c0c0;
  padding: 0 10px;
  display: inline-table;
  float: left;
}
/* 底边条 */
.底边{
  height: 25px;
  background-color: white;
}
